Alpinestars S-M3 Radium Helmet ECE 22.06 Black White Gray Glossy

Expertly designed for MX and Enduro, the S-M3 Radium Helmet features an advanced thermo-injected shell with varying thicknesses to optimize impact protection and weight. Rigorously tested to exceed ECE 22.06 standards, it utilizes a patented low-friction liner and a multi-density EPS structure to manage rotational acceleration and oblique impacts. This ventilated off-road helmet includes a patented visor release system and integrated hydration tube channels for superior rider comfort.

• Advanced Shell Construction: Features a thermo-injected shell with a specialized polymer blend and engineered thickness to provide the optimal balance of lightweight performance and high-impact protection (Weight: 1430g ECE / 1460g DOT).
• Maximized Ventilation System: Engineered with 10 intake ports and seven exhaust ports to ensure high levels of heat transfer and constant airflow during intense riding.
• Rotational Acceleration Force Protection: Utilizes a patented low-friction coating on the inner EPS liner that acts as a slip plane to reduce brain-jarring rotational forces during oblique impacts.
• Patented Visor Release System: Designed to release the visor with a precise, pre-determined force during an impact to significantly reduce stress and potential injury to the rider's neck.
• Optimized shell thickness and structure in the chin area for superior impact performance, exceeding standard homologation requirements.
• Engineered inner and outer surfaces designed to minimize the effects of oblique impacts.
• Emergency Release System and removable 3D contoured foam cheek pads allow for safe and easy helmet removal by rescue services.
• 25mm soft textile chin strap provides optimal safety and a secure fit.
• Stainless steel D-rings for a reliable and tight closure.
• Fully conforms to ECE 22.06 homologation and DOT certification for global use.